.container {
    width: 90%;
    max-width: 1040px;
    margin: auto;
    margin-bottom: 80px;
}

.container h1 {
    font-size: 30px;
    font-weight: normal;
    color: #303659;
    text-align: center;

    margin-top: 40px;
    margin-bottom: 30px;
}

.container .description {
    text-align: center;

    margin-bottom: 40px;
}

.container .main-contents {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.container .main-contents .content {
    background: #fff;
    width: calc(100% / 3 - 20px);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: 0 1px 5px rgb(180 195 255 / 30%);
    transition: all .2s ease;
    padding: 15px 20px;
    border-radius: 4px;
    border: 1px solid transparent;
}

.container .main-contents .content .info p {
    font-size: 12px;
    color: #555;
    margin: 8px 0;
    line-height: 1.5;
}

.container .main-contents .content .info ul {
    padding-left: 18px;
    margin: 8px 0 12px 0;
}

.container .main-contents .content .info li {
    list-style-type: disc;
    margin-bottom: 6px;
    color: #666;
    font-size: 13px;
    line-height: 1.4;
}

.container .main-contents .content .info code {
    background-color: #f4f6fb;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Source Code Pro', monospace;
    font-size: 13px;
    color: #3a3a3a;
}

@media (max-width: 768px) {
    .container .main-contents .content {
        width: calc(50% - 15px);
    }
}

@media (max-width: 480px) {
    .container h1 {
        font-size: 24px;
    }

    .container .description {
        font-size: 12px;
    }

    .container .main-contents .content {
        width: 100%;
    }
}